Which of the following statements about the philosopher Shankara is/are true?_x005F_x000D_ 1.Shankara espoused a form of Vedanta called Advaita._x005F_x000D_ 2.He elaborated on the philosophy of Gaudapada._x005F_x000D_ 3.Shankara tried to demonstrate that the Upanishads and Brahmasutras contain a unified, systematic philosophy._x005F_x000D_ 4.Shankara founded the Amanaya Mathas._x005F_x000D_ Â _x005F_x000D_ Select the correct answer using the code given below._x005F_x000D_

• A. 1 and 2 only_x005F_x000D_
• B. 1, 2 and 3
• C. 3 and 4
• D. 4 only